"Ah! ça ira" was a song of the French Revolution which first appeared in 1790. The refrain "ça ira", meaning "it'll be fine", came from Benjamin Franklin, who was popular in France as a representative of the Continental Congress. When asked about the American Revolution, he would reply "ça ira, ça ira". The original song can be heard here: http://www.youtube.com/watch?v=-srLjMRjoVI